My new two blade OAR CARVER, is billed as a detail carving knife. It, like the single blade came with the factory edge. The factory edge consists of (in my opinion) an extra bevel. This extra bevel must be removed to create the flat blade profile that most Basswood carvers like/use. So don't waste your money having the knife sharpened at the point of purchase. The blade will still have that bevel.
Both of these pocket knives are fine knives. The following is a comparison, from my point of view.
1. Single blade lockback is more comfortable in the hand.
2. Single blade lockback is lighter to use.
3. Single blade lockback has a 1 1/4" blade
4. Two blade non lockback has an 1 5/8" blade and a 1" blade
5. The 1 5/8" blade is very thin at the point, and I like it.
6. The blade profile of the 1" blade is not to my liking. The blade is thicker, and the tip not as pointed as the longer blade.
7. Both blades are D2 tool steel and very good at keeping an edge.
8. The non lockback knife seems to be ok when carving, but one must pay attention when sharpening on a stone and stropping; to be sure it does not close.
9. The single blade knife is 5 years old, and I just got the two blade model. The fit and finish on the older one is better than the newer on (course they might be the same age).
The main improvement I will make is to reshape the smaller of the two blades on the newer knife. Since I carve small. I need the knife tip to be thin and narrow to remove the small chips that define the eyes in the small carving. Others my find no problems at all with the knife once the blade is ground flat and sharpened.